[Cl:1][C:2]1[N:7]=[C:6]([NH2:8])[CH:5]=[CH:4][N:3]=1.[H-].[Na+].[Br:11][C:12]1[CH:17]=[CH:16][C:15]([N+:18]([O-:20])=[O:19])=[C:14](F)[CH:13]=1.O>C1COCC1>[Br:11][C:12]1[CH:13]=[CH:14][C:15]([N+:18]([O-:20])=[O:19])=[C:16]([NH:8][C:6]2[CH:5]=[CH:4][N:3]=[C:2]([Cl:1])[N:7]=2)[CH:17]=1To a solution of 2-chloropyrimidin-4-amine (8.83 g, 68.18 mmol) in THF (250 mL) at 0° C. was added sodium hydride (60% dispersion in oil, 4.36 g, 181.82 mmol) portionwise. The reaction mixture was stirred at 0° C. to RT for 10 minutes before addition of 4-bromo-2-fluoro-1-nitrobenzene (10 g, 45.45 mmol). The reaction mixture was stirred at 65° C. for 1 hr, then after cooling to RT, water was added resulting in formation of a yellow precipitate. The solid was collected by suction filtration and was washed with water. The filtrate was extracted with DCM. The organics were washed with water, dried over Na2SO4, filtered and concentrated in vacuo. The residue was purified by flash chromatography (Isolute column, 1% MeOH in DCM) then combined with the solid collected by suction filtration to give the title compound: 1HNMR (250 MHz, DMSO) δ 6.91 (1H, d, J=5.79 Hz), 7.61 (1H, dd, J=8.76, 2.21 Hz), 7.91-8.05 (2H, m), 8.29 (1H, d, J=5.79 Hz), 10.40 (1H, s); LC-MS: m/z=+328.9, 330.8 (M+H)+.
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